fix: safe area and UI polish pass

- Enable dark navigation headers in Tab navigator (fixes status bar overlap
  on all 5 tab screens automatically)
- Use useSafeAreaInsets for AlbumDetail/ArtistDetail back buttons
- Use useSafeAreaInsets for NowPlaying header and bottom padding
- Remove redundant paddingTop from Home heading and Login content
- Cleaner tab bar (height 60, better label spacing)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

mobile/App.js

@@ -50,17 +50,32 @@ function HomeTabs() {
   return (
     <Tab.Navigator
       screenOptions={({ route }) => ({
-        headerShown: false,
-        tabBarStyle: { backgroundColor: '#1e1e1e', borderTopColor: '#2a2a2a' },
+        headerStyle: {
+          backgroundColor: '#121212',
+          elevation: 0,
+          shadowOpacity: 0,
+          borderBottomWidth: 0,
+        },
+        headerTintColor: '#fff',
+        headerTitleStyle: { fontWeight: '800', fontSize: 20 },
+        tabBarStyle: {
+          backgroundColor: '#1a1a1a',
+          borderTopColor: '#2a2a2a',
+          borderTopWidth: 1,
+          height: 60,
+          paddingBottom: 8,
+          paddingTop: 4,
+        },
         tabBarActiveTintColor: '#1db954',
-        tabBarInactiveTintColor: '#888',
+        tabBarInactiveTintColor: '#666',
+        tabBarLabelStyle: { fontSize: 10, fontWeight: '600', marginTop: 2 },
         tabBarIcon: ({ color, size }) => {
           const icons = { Home: 'home', Artists: 'person', Albums: 'disc', Search: 'search', Settings: 'settings-outline' };
-          return <Ionicons name={icons[route.name] || 'ellipse'} size={size} color={color} />;
+          return <Ionicons name={icons[route.name] || 'ellipse'} size={22} color={color} />;
         },
       })}
     >
-      <Tab.Screen name="Home"     component={HomeScreen}    options={{ title: 'Start' }} />
+      <Tab.Screen name="Home"     component={HomeScreen}    options={{ title: 'Start',          headerTitle: 'NovaSonic' }} />
       <Tab.Screen name="Artists"  component={ArtistsScreen} options={{ title: 'Künstler' }} />
       <Tab.Screen name="Albums"   component={AlbumsScreen}  options={{ title: 'Alben' }} />
       <Tab.Screen name="Search"   component={SearchScreen}  options={{ title: 'Suche' }} />

mobile/src/screens/AlbumDetail.js

@@ -4,6 +4,7 @@ import {
   StyleSheet, ActivityIndicator,
 } from 'react-native';
 import { useNavigation, useRoute } from '@react-navigation/native';
+import { useSafeAreaInsets } from 'react-native-safe-area-context';
 import { Ionicons } from '@expo/vector-icons';
 import { api, ensureArtistSortMap, dispAlbumName, dispArtistById, coverUrl } from '../api';
 import { playQueue, skipToIndex } from '../audio/player';
@@ -12,6 +13,7 @@ import SongItem from '../components/SongItem';
 
 export default function AlbumDetailScreen() {
   const navigation = useNavigation();
+  const insets     = useSafeAreaInsets();
   const { album }  = useRoute().params;
   const { cfg }    = useStore();
   const [songs,    setSongs]   = useState([]);
@@ -49,7 +51,7 @@ export default function AlbumDetailScreen() {
         ListHeaderComponent={() => (
           <View>
             {/* Back button */}
-            <TouchableOpacity style={styles.backBtn} onPress={() => navigation.goBack()}>
+            <TouchableOpacity style={[styles.backBtn, { top: insets.top + 8 }]} onPress={() => navigation.goBack()}>
               <Ionicons name="chevron-back" size={24} color="#fff" />
             </TouchableOpacity>
 
@@ -111,10 +113,10 @@ export default function AlbumDetailScreen() {
 const styles = StyleSheet.create({
   container:  { flex: 1, backgroundColor: '#121212' },
   backBtn: {
-    position: 'absolute', top: 44, left: 12, zIndex: 10,
+    position: 'absolute', left: 12, zIndex: 10,
     backgroundColor: 'rgba(0,0,0,0.5)', borderRadius: 20, padding: 6,
   },
-  artWrap:    { alignItems: 'center', paddingTop: 60, paddingBottom: 16 },
+  artWrap:    { alignItems: 'center', paddingTop: 72, paddingBottom: 16 },
   art: {
     width: 220, height: 220, borderRadius: 8,
     shadowColor: '#000', shadowOpacity: 0.5, shadowRadius: 16,

mobile/src/screens/ArtistDetail.js

@@ -6,12 +6,14 @@ import {
 
 const SCREEN_WIDTH = Dimensions.get('window').width;
 import { useNavigation, useRoute } from '@react-navigation/native';
+import { useSafeAreaInsets } from 'react-native-safe-area-context';
 import { Ionicons } from '@expo/vector-icons';
 import { api, apiCached, dispArtistById, dispAlbumName, coverUrl, getArtistImage, cacheArtistSortNames } from '../api';
 import AlbumCard from '../components/AlbumCard';
 
 export default function ArtistDetailScreen() {
   const navigation = useNavigation();
+  const insets     = useSafeAreaInsets();
   const { artist } = useRoute().params;
   const [albums,  setAlbums]  = useState([]);
   const [img,     setImg]     = useState(null);
@@ -43,7 +45,7 @@ export default function ArtistDetailScreen() {
             <Text style={{ fontSize: 64 }}>🎤</Text>
           </View>
         )}
-        <TouchableOpacity style={styles.backBtn} onPress={() => navigation.goBack()}>
+        <TouchableOpacity style={[styles.backBtn, { top: insets.top + 8 }]} onPress={() => navigation.goBack()}>
           <Ionicons name="chevron-back" size={24} color="#fff" />
         </TouchableOpacity>
         <View style={styles.heroOverlay}>
@@ -91,7 +93,7 @@ const styles = StyleSheet.create({
   heroName: { color: '#fff', fontSize: 24, fontWeight: '800', textShadowColor: '#000', textShadowRadius: 8 },
   heroSub:  { color: '#ddd', fontSize: 13, marginTop: 2 },
   backBtn: {
-    position: 'absolute', top: 44, left: 12,
+    position: 'absolute', left: 12,
     backgroundColor: 'rgba(0,0,0,0.5)', borderRadius: 20,
     padding: 6,
   },

mobile/src/screens/Home.js

@@ -92,8 +92,7 @@ export default function HomeScreen() {
       style={styles.container}
       refreshControl={<RefreshControl refreshing={refreshing} onRefresh={() => { setRefreshing(true); load(true); }} tintColor="#1db954" />}
     >
-      <Text style={styles.heading}>Willkommen zurück 👋</Text>
-      <AlbumRow title="Zuletzt gehört"  albums={recent}   onAlbumPress={goAlbum} />
+      <AlbumRow title="Zuletzt gehört"  albums={recent}    onAlbumPress={goAlbum} />
       <AlbumRow title="Meistgespielt"   albums={frequent}  onAlbumPress={goAlbum} />
       <AlbumRow title="Neu hinzugefügt" albums={newest}    onAlbumPress={goAlbum} />
       <View style={{ height: 16 }} />

mobile/src/screens/Login.js

@@ -120,7 +120,7 @@ export default function LoginScreen() {
 
 const styles = StyleSheet.create({
   container: { flex: 1, backgroundColor: '#121212' },
-  content:   { padding: 24, paddingTop: 60 },
+  content:   { padding: 24, paddingTop: 24 },
   logo:      { fontSize: 32, textAlign: 'center', marginBottom: 8 },
   subtitle:  { color: '#aaa', textAlign: 'center', marginBottom: 32, fontSize: 14 },
   label:     { color: '#ccc', fontSize: 13, marginBottom: 6, marginTop: 16 },

mobile/src/screens/NowPlaying.js

@@ -1,9 +1,10 @@
 import React, { useState } from 'react';
 import {
   View, Text, Image, TouchableOpacity,
-  StyleSheet, Dimensions, PanResponder,
+  StyleSheet, Dimensions,
 } from 'react-native';
 import { useNavigation } from '@react-navigation/native';
+import { useSafeAreaInsets } from 'react-native-safe-area-context';
 import { Ionicons } from '@expo/vector-icons';
 import { usePlaybackState, useProgress, State } from 'react-native-track-player';
 import Slider from '@react-native-community/slider';
@@ -15,6 +16,7 @@ const { width } = Dimensions.get('window');
 
 export default function NowPlayingScreen() {
   const navigation    = useNavigation();
+  const insets        = useSafeAreaInsets();
   const { currentTrack, repeat, shuffle, setShuffle } = useStore();
   const playbackState = usePlaybackState();
   const { position, duration } = useProgress(500);
@@ -38,7 +40,7 @@ export default function NowPlayingScreen() {
   }
 
   return (
-    <View style={styles.container}>
+    <View style={[styles.container, { paddingTop: insets.top, paddingBottom: insets.bottom + 16 }]}>
       {/* Header */}
       <View style={styles.header}>
         <TouchableOpacity onPress={() => navigation.goBack()} style={styles.headerBtn}>
@@ -119,13 +121,13 @@ export default function NowPlayingScreen() {
 }
 
 const styles = StyleSheet.create({
-  container: { flex: 1, backgroundColor: '#121212', paddingBottom: 40 },
+  container: { flex: 1, backgroundColor: '#121212' },
   empty: { flex: 1, backgroundColor: '#121212', alignItems: 'center', justifyContent: 'center' },
   emptyText: { color: '#aaa', fontSize: 16 },
   back: { color: '#1db954', marginTop: 12, fontSize: 14 },
   header: {
     flexDirection: 'row', alignItems: 'center', justifyContent: 'space-between',
-    paddingTop: 52, paddingHorizontal: 16, paddingBottom: 12,
+    paddingTop: 12, paddingHorizontal: 16, paddingBottom: 12,
   },
   headerBtn:   { width: 40, alignItems: 'flex-start' },
   headerTitle: { color: '#fff', fontSize: 14, fontWeight: '700', letterSpacing: 0.5 },